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Functionally distinct assembly of vascular plants colonizing alpine cushions suggests their vulnerability to climate change
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SYSNO ASEP 0510913 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Functionally distinct assembly of vascular plants colonizing alpine cushions suggests their vulnerability to climate change Author(s) Doležal, Jiří (BU-J) RID, ORCID
Dvorský, Miroslav (BU-J) ORCID, RID
Kopecký, Martin (BU-J) RID, ORCID
Altman, Jan (BU-J) RID, ORCID
Mudrák, Ondřej (BU-J) RID, ORCID
Čapková, Kateřina (BU-J) ORCID, RID
Řeháková, Klára (BU-J) RID, ORCID
Macek, Martin (BU-J) ORCID, RID, SAI
Liancourt, Pierre (BU-J) RID, ORCIDSource Title Annals of Botany. - : Oxford University Press - ISSN 0305-7364
Roč. 123, č. 4 (2019), s. 569-578Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords alpine cushion plants ; competition and facilitation ; plant traits Subject RIV EA - Cell Biology OECD category Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology R&D Projects GA17-19376S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support BU-J - RVO:67985939 UT WOS 000462548800001 EID SCOPUS 85062984715 DOI 10.1093/aob/mcy207 Annotation Alpine cushion plants can initially facilitate other species during ecological succession, but later on can be negatively affected by their development, especially when beneficiaries possess traits allowing them to overrun their host. This can be reinforced by accelerated warming favouring competitively strong species over cold-adapted cushion specialists. However, little empirical research has addressed the trait-based mechanisms of these interactions. The ecological strategies of plants colonizing the cushion plant Thylacospermum caespitosum (Caryophyllaceae), a dominant pioneer of subnival zones, were studied in the Western Himalayas. To assess whether the cushion colonizers are phylogenetically and functionally distinct, 1668 vegetation samples were collected, both in open ground outside the cushions and inside their live and dead canopies, in two mountain ranges, Karakoram and Little Tibet. More than 50 plant traits related to growth, biomass allocation and resource acquisition were measured for target species, and the phylogenetic relationships of these species were studied [or determined]. Species-based trait–environment analysis with phylogenetic correction showed that in both mountain ranges Thylacospermum colonizers are phylogenetically diverse but functionally similar and are functionally different from species preferring bare soil outside cushions. Successful colonizers are fast-growing, clonal graminoids and forbs, penetrating the cushion by rhizomes and stolons. They have higher root-to-shoot ratios, leaf nitrogen and phosphorus concentrations, and soil moisture and nutrient demands, sharing the syndrome of competitive species with broad elevation ranges typical of the late stages of primary succession. In contrast, the species from open ground have traits typical of stress-tolerant specialists from high and dry environments. Species colonizing tight cushions of T. caespitosum are competitively strong graminoids and herbaceous perennials from alpine grasslands. Since climate change in the Himalayas favours these species, highly specialized subnival cushion plants may face intense competition and a greater risk of decline in the future. Workplace Institute of Botany Contact Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0301274
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